Microwave and terahertz wave all-metal hyperbolic metamaterial antenna and implementation method thereof

Abstract

The invention discloses a microwave and terahertz wave all-metal hyperbolic metamaterial antenna and an implementation method thereof. The all-metal hyperbolic metamaterial antenna comprises metal meander lines and supporting columns, wherein each metal meander line is in a square waveform shape, the multiple metal meander lines are periodically arranged in the y direction to form a metal two-dimensional meander line plane, and the multiple layers of metal two-dimensional meander line planes are periodically arranged in the x direction to form the all-metal hyperbolic metamaterial antenna. According to the invention, the loss of the whole structure can be effectively reduced, the transmission rate on incident traveling waves is also extremely high at the same time, and the TM polarized incident wave transmission rate exceeds 80% when the incident angle is less than 50 degrees; meanwhile, due to lack of a solid filling medium, the antenna can also work in some special scenes, such as high-power occasions and threshold-free Cherenkov radiation requiring free movement of electrons; and the antenna is not limited to a microwave band, and a low-loss terahertz all-metal hyperbolic metamaterial antenna can also be designed by applying the method in a terahertz band with extremely high dielectric loss.

Description

technical field [0001] The invention relates to microwave frequency band metamaterial technology, in particular to a microwave and terahertz wave all-metal hyperbolic metamaterial antenna and a realization method thereof. Background technique [0002] Hyperbolic metamaterials are artificial anisotropic materials whose equifrequency dispersion lines are hyperbolic. This singular property arises from the negative components in the diagonal permittivity or permeability tensors. In the present invention, only electric hyperbolic metamaterials with wider application scenarios are discussed, that is, the magnetic permeability tensor degenerates to a constant. Different from naturally occurring anisotropic materials, due to the openness of the hyperbola, hyperbolic metamaterials can couple and transmit surface waves with arbitrarily large wave vectors that cannot be supported by other materials. Imaging, threshold-free Cerenkov radiation, surface wave antennas and manipulation of...

AI Technical Summary

Problems solved by technology

This feature increases the complexity of designing hyperbolic metamaterials to a certain extent.

The mainstream methods introduced above have their own advantages in the design of hyperbolic metamaterials. However, due to the specific requirements for the constituent materials, these methods cannot support the design of all-metal hyperbolic metamaterials.

This problem also means that the high loss caused by the medium is unavoidable

At the same time, medium filling also limits the application of hyperbolic metamaterials in some specific occasions that require air medium

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